Safety pin with bayonet point



A. DUDAS ET AL SAFETY PIN WITH BAYONET POINT Filed Aug. 28. 1926Patented} Apr. 5, 1927.

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ANDREW n-UDA-s A D ALBERT.-P. .WASIL, or HoMnsTEAn,.rnnnsynvnnm.

' SAFETYPIN"WITH BAYONET POINT.

'App'l'ication'filed August 28, 1926; Serial -'No. 1-32,297.

This invention relates 'to safety-pins I and more particularly toimprovements in the construction of safety-pins of the :soca'lledClinton-type. V p y The primary objectof this invention is to provide. asafety-pin of thewClinton-type which is able to withstand aan-uchgreater pull than ordinary safety-pins of the same size, Without causingthe 1 opening 7 of said pin. Anotherobject of this invention is toprovide a safety-pin in which the pin- Qbar, after having beenconsiderably de formed owing to the pull'exerted thereon willpracticallylock itself with the cap of said satetypin and thus preventtheopenving thereof, A turthel object of this invention is -to provide;a safety-pin which to a great extent prevents the pricking" of the fleshof the-person on Whom thesafety-pin is applied. Still another object isthe-provision of a safety-pin in which the above Fig. 2 isasimilar viewota slightly-inoidilied safetyypin.

Fig. 3.-is a side-elevation of -a safety pin similar to the one shown inFig. 2 =but provided with a combined spring-loop and guard, also of ourinvention and #Which formsthe subject matter of a co=pendingapplicat-iona r Fig. 4 is a: top plan View otthe safety-pincap fused inthe safety-pins illustrated .in Eigs. 2 and 3.

Figs; 5 and G'are considerably enlarged fractional ,vievvs showingrespectively the conditions of the piercing endof the pin-bar undernormal use and Whensubjected to an excessive pull capable of bendingsaid pinbar as Well-as thebridgebar of the safety pin oil the designshownin Fig.' 1.

Figs. 7 and 8 are similar illustrations showing the behavior of the typeof safety.

pin shown in Figs. Qand 3 under analogous conditions.

F ig. 9 is a vlewshowing the condltlon bar is pushed through cloth, etc.

Referring to: the drawing, it will benoted that our improved safety-pinsfollow. in the main, the construction of the universally used type ofsafet-y-pin'known in :the iart as prevaili-ngwvhen the piercing end ofthe pin- .Clinton-type safety-pins Thiswpin-comprises a bridge-bar 1, apin'bar 2, the connectlng spring-loop '3 and thesafety-pln-cap 4.'lhe'latter is held securely on thesafety pin by providing onthebridge-bar an upard bend 5 upon which the capis pressed by means ofautomatic presses. This cap is, of a course, intended to receive andhold therein :the pointed end of gthe .pin bar, when the safety-pin is.closed.

In .the ordinary Clinton safety-pin, the pin-bar is substantiallystraight from the spring-loop .3 tothe pointed end. Ve have found afterextensive experimentation and modifications that by giving to thepointed end or the pin-bar the substantially bayonetshaped form shown inthe various figures that-the resistance of a closed safety-pin againstpull is-greatly increased while at the-sametii-nethe insertion ofsaidpin in cloth isnot only tacilitated but rendered much safer in soifar: as the danger of pricking a persons flesh is concerned. 7

.As shown in:the various figures, the bayonet-shaped pointed. end of thepin-bar is formed by first bendingnp-a portion of the pin-bar.adjacentthe end thereof at an acute angle with the axis ofthe-pin-barinform the heel portionfi and bythenproducing :at the end of said heelthe downwardly direct.- ed piercing element 7 Whichis preferably bentatsuch an angleas to'bring: the point 8 substantially inalignment with theaxis of the pin-bar. The .piercingelemcnt endthe heel-portion arerespectively connected {to-- gether :and tothe body proper ot' thepin-bar by smooth bends or curves!) and 10in order to facilitate theinsertion or extraction-0t the pin-bar in or'out of cloth.

In the construction shown 111 Figs; 2, 7

and '8, theordinary .Glinton safety-pin'has, further been modified byprovidingin the top portion of the cap 4 the elongated and substantiallytriangular aperture 11 disposed inaxial alignment with the pin-bar andthrough Whicha portion of the bay/onetpoint may protrude for thelpnrposeof tablishiing; a practically positive locking engagement of saidhayonetrpoint 'utith lhe cap, whereby any acc dental opening of the illsafety-pin, due to excessive pulling, is prevented as long as the capmaintains its proper shape.

Under normal conditions, the piercing element 7 of a safety-pinconstructed in the manner shown in Fig. 1 will assume the positionillustrated in Fig. 5, that is, the upper bend 9 will bear against theunderside of the top portion of the cap 4; and the heel 6 as well as thepiercing element 7 will be at an angle with said underside.

When subjected to an excessive pull. the pin-bar and the bridge-bar willbe bent in the manner suggested in Fig. (3. As shown therein, after acertain degree of curvature has been reached in the pin-bar, thestraightheel, portion 6 will bear completely against the underside of the topportion of the cap and, when in this position. will greatly increase theresistance of the pin-bar against further bending, as proved by actualand prolonged use.

This resistance against bending of the pinbar is still more augmentedwhen the safetypin is provided with a notched cap, as ocpicted in themodified construction. In this case, further bending of the pin-bar willbe resisted by the combined action of the flat heel bearing against theunderside of the top portion of the cap assisted by the practicallypositive locking action produced by the engagement of the base portionof the bond 9 with the straight side 12 of the notch or aperture 11..Vhen so constructed, the disengagen'ient of the pin-bar from the cap ispractically impossible, unless the safety-pin be so stressed as to causethe spreading of the cap proper.

In Fig. 3 we have shown a safety-pin, which in addition of the abovedescribed features is provided with a spring-loop.- guard 't'orinedintegrally with the loop to prevent the pinching of cloth between theturns of said loop, as fully explained in a eo-pending application.

We have endeavored to graphically illustrate in Fig. 9 the reason why abayonetpointed safety-pin of our invention oli'ers greater protectionagainst pricking of the flesh ot' a person than the ordinary safetypinhaving a straight pin-bar. From this illustration it will be seen thatwhen a pinbar is pushed through cloth in the usual manner, i. e.substantially parallel to the flesh of a person, the bent portion 9 willbe the first one to come in Contact with the flesh and that the tendencyof the piercing element 7 will be to direct the point 8 outwardly andaway from the flesh.

From the above description it will be apparent that we have providedsafety-pins which offer the advantages set forth without addingpractically to the cost of manufacture of the common type of Clintonsafety-pin by means of automatic machinery made especially for thepurpose and readily available in the market.

From the above description taken in connection with the drawing, it isthought that a clear and comprehensive understamling ot' theconstruction, operation and advantages of our invention may be had, andwhile we have shown and described our invention as embodying specificstructures, we desire to reserve the right of making such changes insaid structures as do not depart from the spirit and scope of theinvention as defined in the appended claims.

\Ve claim:

1. In a safety-pin of the character described, a pin-bar having abayonet-shaped end comprising a heel-portion and a piercing elementconnected together by a bend, and a cap having an aperture adapted to beengaged by said bend.

2. In a safety-pin of the character described, a pin-bar having abayonetshaped end comprising a heel-portion and a piercing elementconnected tog-ether by a gradual bend and a cap having a triangularaperture disposed in axial relation with said pin-bar and adapted to beengaged by said bend.

3. In a safety-pin, a pin-bar; a bridgebar and a cap; said pin-barhaving a bayonetshaped end comprising a heel-portion directed outwardlyat an acute angle with the axis of said pin-bar and a piercing elementdisposed at such an acute angle with said heel-portion as to bring thepoint only of the piercing element suljistantially in line with the axisof said pin-bar.

4. In a safety-pin, a pin-bar; a bar and a cap, said pin-bar having abayonet-shaped end disposed in a plane passing substantially through thelongitudinal axes of said pin-bar and said bridge-bar and comprising aheel-portion directed outwardly at an acute angle to the axis of saidpin-bar and a piercing element disposed at such an acute angle with saidheel-portion as to bring the point of the piercing element substantiallyin line with the axis of said pinbar; said heel-portion and piercingbeing respectively connected to said pin-bar and together by gradualbends to facilitate the insertion and extraction of said pin-bar; saidcap being adapted to contact only with the gradual bend connecting thepiercing element with the heel-portion when the closed pin-bar is undernormal load and to contact with said heel portion when the pin bar isflexed by excessive stresses.

In testimony whereof we atiix our signatures.

bridge- ANDRElV DUDAS. ALBERT P. IVASIL.

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